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Biomedical subjects

Y Numaguchi

Publications and source records attributed to Y Numaguchi.

At least 145 records · Page 8Linked to original sources
PubMed1978

Angiographic diagnosis of fourth ventricle tumors.

Twelve primary fourth ventricle tumors and 22 medulloblastomas occupying mainly the fourth ventricle were analyzed, with emphasis on the differential diagnosis, vascularity, and some unusual findings. Though both types of tumor often have identical manifestations, the correct diagnosis can be made in most cases by careful evaluation of the posterior inferior cerebellar artery, particularly the choroidal and nodular branches. Unusual findings in primary fourth ventricle tumors mimicking tumors of the pons and medulla oblongata are described, and possible explanations for these findings are discussed. The results of this study underscore the importance of angiotomography in the diagnosis of tumors of the fourth ventricle.

Adult↗
PubMed1978

Angiographic diagnosis of benign and malignant splenic tumors.

Fifteen cases of benign and malignant nodular splenic tumors, including six cysts, one hamartoma, two hemangiosarcomas, five reticulum cell sarcomas, and one Hodgkin's disease, are presented with their arteriographic manifestations. The value of splenic arteriography is emphasized, since it may provide rather specific information in the diagnosis of benign and malignant nodular splenic tumors. Differential diagnostic considerations are also discussed.

Adolescent↗
PubMed1977

Hemangiosarcoma of the spleen and liver metastases: angiographic manifestations.

The arteriographic findings in two cases of hemangiosarcoma of the spleen with liver metastases are described. These are the second and third reported cases of angiographically demonstrated malignant splenic tumors of vascular origin. Despite the absence of tumor vessels, there were multiple vascular takes in the arterial through the venous phase, mimicking benign cavernous hemangioma. Multiple metastases in the liver were the only clue to malignancy. Arteriography combined with liver-spleen scintigraphy not only provides information which is valuable in the preoperative diagnosis but also aids in management of the patient.

Adult↗
PubMed1977

Serial scintigraphy of choledochal cysts using 131I-rose bengal and 131I-bromsulphalein.

Nine cases of congenital choledochal cysts are reported which were correctly diagnosed by 131I-rose bengal or 131I-bromsulphalein (BSP) serial scintigraphy. They were classified by scintigraphic patterns into two types depending on whether biliary obstruction was complete or incomplete. All but two showed incomplete obstruction. The correct diagnosis may be difficult to make by scintigraphy if complete biliary obstruction is present. In such cases the clinical findings and other diagnostic studies, such as angiography or ultrasound, should be carefully considered. Serial scintigraphy with 131I-rose bengal or 131I-BSP is nontraumatic, safe, and provides increased diagnostic accuracy. It is the examination of choice when choledochal cysts are suspected clinically.

Adolescent↗
PubMed1976

Some observations in progressive arterial occlusions in children and young adolescents: (Moyamoya disease).

In "primary arterial occlusions of children", an unusual collateral circulation has been described first by Japanese, and later by others worldwide. As experience was gained some workers started to realize that the "typical angiographic appearance" could be found in several disease entities. It thus became evident that angiographic differentiation is important. In this communication we wish to discuss this entity and outline its significance as well as emphasize the pitfalls.

Adolescent↗
PubMed1975

Femoral percutaneous catheterization in infants and small children for cerebral angiography.

An improved technique of selective cerebral angiography for infants and small chicken is described. The needle is inserted approximately 45 degrees to the skin in order to avoid subintimal placement of the tip. After good backflow is established, the guidewire is advanced to a position in the descending aorta. A No. 3 polyethylene catheter and 21-gauge scalp vein needle were most successful.

Catheterization↗
PubMed1975

Basal ganglia calcification as a late radiation effect.

Basal ganglia calcification following radiation therapy has rarely been documented in the literature. A case of diffuse bilateral basal ganglia calcification developing 6 years after irridiation of a hypothalamic glioma is presented. Review of previous reports and other causes of basal ganglia calcification are discussed.

Astrocytoma↗